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Transcript of INVERTEBRATES
CLASSIFICATION OF INVERTEBRATES
They have a large opening called osculum and many small pores. Their collar cells (choanocytes) obtain nutrients and oxygen from water.
They are parasites that live in the intestines of some animals
An example is the TAENIA
They can live in streams, ponds or lakes
They are parasites and live in the intestine of animals
They are not parasites. They live in wet soils. They are hermaphrodites
They live in freshwater environments and feed on blood of other animals. They are hermaphrodites
They are cylindrical and smooth
They are flat
They are cylindrical and their body is divided into segments called metameres. They have cutaneous respiration
They have a sac-like body and are attached to the sea floor. They have asexual reproduction by fragmentation
They are umbrella-shaped and gelatinous. They can move by contracting their body. They reproduce sexually
They are also called jellyfish
They have shells with two valves
They have a separate head and body and four tentacles
They have tentacles around their single opening which is the mouth and also the anus. They have cells called cnidocytes to hunt their prey
They have tentacles with suction cups
They have jointed limbs (legs and antennae) and an external skeleton called exoskeleton
Their head has one pair of antennae and their body has many pairs of legs
Its body is divided into two parts: CEPHALOTHORAX (with four pairs of legs) and ABDOMEN
Their cephalothorax has two pair of antennae and usually five pairs of legs. They also have an abdomen.
They have HEAD (with one pair of antennae), THORAX (with three pairs of legs and usually two wings) and ABDOMEN
They have a system of ambulacral tubes through which seawater circulates
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